|Date|Race name|D(f)|Course|Prize (£)|Odds|Runners|Place|Margin|Winner/Runner-up|Time|Jockey|
|---|---|---|---|---|---|---|---|---|---|---|---|
|July 1879|Chesterfield Stakes|5|Newmarket|1130|9/4|11|1|1|Petal|0:59|Charles Wood|
|29 July 1879|Richmond Stakes|6|Goodwood|1762||8|1|||||
|August 1879|Prince of Wales Stakes|5|York|340|1/2|9|1|0.5|Brother to Ersilia||Fred Archer|
|1879|Triennial Produce Stakes|10|Newmarket|881||11|1|||||
|1879|Rous Memorial Stakes|5|Newmarket|567||10|1|||||
|26 May 1880|Epsom Derby|12|Epsom Downs|6375|2/1|19|1|Head|Robert the Devil|2:48|Fred Archer|
|June 1880|St. James's Palace Stakes|8|Ascot|1550|30/100|5|1|Head|Fernandez||G Fordham|
|15 September 1880|St Leger|14.5|Doncaster|6100|4/5|12|6||Robert the Devil|3:32||
|28 September 1880|Great Foal Stakes|10|Newmarket|2697|9/2|7|2|Head|Robert the Devil|2:25|Tom Cannon|
|14 October 1880|Champion Stakes|10|Newmarket|2071|5/4|4|2|10|Robert the Devil|2:10|G Fordham|
|27 April 1881|City and Suburban Handicap|10|Epsom Downs|1230|100/8|24|1|1.5|Foxhall|2:07|Fred Archer|
|3 June 1881|Epsom Gold Cup|12|Epsom Downs|500||2|1||Robert the Devil|||
|13 October 1881|Champion Stakes|10|Newmarket|2087|4/6|8|1|0.75|Scobell|2:23.6|Fred Archer|
|25 October 1881|Cambridgeshire Stakes|9|Newmarket|2017|9/2|32|7||Foxhall|2:15.4|Fred Archer|

Question: what are the number of times a race took place at the epsom downs racecourse?
Answer: 3